513512326693 has 2 divisors, whose sum is σ = 513512326694. Its totient is φ = 513512326692.

The previous prime is 513512326589. The next prime is 513512326709. The reversal of 513512326693 is 396623215315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406963615969 + 106548710724 = 637937^2 + 326418^2 .

It is a cyclic number.

It is not a de Polignac number, because 513512326693 - 2¹⁷ = 513512195621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513512326993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256756163346 + 256756163347.

It is an arithmetic number, because the mean of its divisors is an integer number (256756163347).

Almost surely, 2^513512326693 is an apocalyptic number.

It is an amenable number.

513512326693 is a deficient number, since it is larger than the sum of its proper divisors (1).

513512326693 is an equidigital number, since it uses as much as digits as its factorization.

513512326693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 46.

The spelling of 513512326693 in words is "five hundred thirteen billion, five hundred twelve million, three hundred twenty-six thousand, six hundred ninety-three".